I upgraded from 13.10 to 14.04 LTS but I can confirm that this problem still happens in 14.04 LTS.
sudo killall systemd-logind -> changed nothing sudo killall NetworkManager --> fixed networking immediately. Toggling the software "Enable Networking" in the NM applet did not work. Toggling the hardware rfkill switch did not work. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1251054 Title: networking didn't return from suspend To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1251054/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs